3 09 49 經濟部智慧財產局員工消費合作社印製 A7 ____B7______五、發明說明（1 ) 發明領域 本發明是關於一種有線電視用信號分支器’詳細地說 ，是用來克服信號分支器中浪湧電流所引起的信號失真。 發明背景 有線電視（C A T V )及T V的設備利用網路使用同 軸電纜從所謂的頭端提供例如5至1 0 〇 〇 Μ Η z多重頻 道，寬頻帶高頻訊號給家庭用戶端，提供寬頻帶分支分配 器將訊號分配至家庭用戶。在此情況下，提供寬頻帶放大 器來補償任何信號水準降落。 電源必須供給放大器，且避免需要提供與信號傳輸同 軸電纜分離的電源線，電源通分支分割器供同軸電纜內進 ί了電源多路傳輸。 近年來，具有此種結構的C A Τ V網路使用率急速成 長，不僅可提供傳輸T V訊號，同時可提供如網際網路資 料傳輸服務。舉例，資料訊號在5到5 5 Μ Η z頻帶內運 作，且TV訊號在7 0到1 Ο Ο ΟΜΗ ζ頻帶內運作。 此處，資料訊號包含從頭端送出，或由家庭用戶端送 出（反向訊號）的訊號。當傳輸反向訊號時，資料從電腦 進入R F數據機，並以高頻訊號的方式沿著同軸電纜抵達 頭端。經由Ε η路由器，反向訊號通過頭端及家庭用戶端 之間所有的分支分割器。 圖9顯示分支分割器的範例’在此電路中，電源伴隨 高頻訊號從輸入端子I Ν供入。電源由電容終止，中斷直 Γ請先閱讀背面之注意事項再填寫本頁) 歡 · 線· 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-4 - A7 --------B7___ 五、發明說明（2 ) ^ m c 1及c 2，且沿著抗流線圈l流至輸出端子〇υ τ 〇 3 一方面，高頻訊號由抗流線圈L阻斷，沿著分支電 路D C內’比流器τ 1的一次繞組1 1通抵電容C 1 ,並 經由電容C 2輸出到輸出端子〇 U T。在此情況下，於分 支電路D C內，信號通過比流器τ 1的二次繞組1 2，比 流l器T 2的二次繞組1 4，且局部訊號從比流器T 2的一 ;欠繞組1 3輸出到分支端子B。一次繞組1 3的其它端子 經由電阻R接地。 分支端子B的訊號經由分配器均勻分配至用戶端P1 ’ p 2，……Ρ η，但必須在主線上做分支的動作。 圖1 0顯示圖9中分支分割器的傳輸特性。亦即，在 輸入端子I Ν及輸出端子OUT之間5至1 Ο Ο ΟΜΗ ζ 的範圍內具有小於2 . 0 d B的穿越損失，在輸入端子 I N及分支端子B之間約有2 0 d B的耦合損失，在輸出 端子OUT及分支端子B之間約有3 0 d B或更多的退耦 損失。 此處訊號分支分割器包含變壓器’當浪湧電流作用在 與變壓器結合的磁芯上時，信號便會失真。 亦即，在圖9電路中，當浪湧電流從輸入端子1 N滲 入，會流經（a )電容C 1，變壓器T 1 一次繞組1 1 ’ 及電壓器T 2二次繞組1 4，或流經（b )輸入端子I N ，組斷線圈L，電容C 1 ’及變壓器T 2二次繞組1 4抵 達接地。如此，於變壓器T 2鐵芯磁化後’殘留磁化效應 C請先閱讀背面之注意事項再填寫本頁) .¾ ·. 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱1 ~ 490938 A7 -------B7_ 五、發明說明（3 ) 會導致變壓器高頻操作區域變成非線性。 發明槪述 _ 本發明主要目的之針對上述問題提供C A TV訊號分 支器，可防止由於內部磁芯浪湧電流所導致的訊號失真。 爲了達到上述目的，本發明CATV訊號分支器包含 外罩，設有輸入端子，輸出端子，及分支端子；導引變壓 器及分支電路元件，提供在外罩內並與輸出端子及輸出端 子相連接，C A T V訊號分支器將訊號從輸入端子傳輸到 輸出端子及分支端子，以及從分支端子傳輸到輸入端子。 外罩電磁密封密封，且設有開口容納輸入端子，輸出端子 ，以及分支端子。這些端子接包含於外罩內。再者，導引 變壓器設有具備低效導磁性常數的芯，包含一次繞組連接 在輸入端子及外罩之間，及二次繞組連接在外罩及分支電 路元件之間。一次繞組及二次繞組具有預設的變壓比。 圖示簡單說明 (·請先閱讀背面之注意事項再填寫本頁) d --線· 經濟部智慧財產局員工消費合作社印製 圖圖圖圖 圖圖 第第第第第第第 ΓΠ7 月月 月月 月 月 npy By PM> 發發發發發發發 本本本本本本本 示示示一不一不一不示 顯顯顯顯顯顯顯 角角 圖圖 AHM 構構 結結 7J β. 立口 咅 內內 例例 施施 實實 解解 圖圖 的的 構構 結結 部部 內內 rnu rnu 施施 實實 解 圖 的 構 結 部 內 例 施 實 解解 圖 圖 的的 構構 結結 ZJ 音 咅 內內 例例 施施 實實 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-6 - 490938 A7 ---- B7 五、發明說明（4 ) 圖8 A ’ 8 _ B ’及8 C顯示本發明實施例中所使用磁 芯範例的圖解； 圖9 ·顯示習知CATV訊號分支器的圖解； 圖1 0 ·顯示圖9訊號分支器內頻率及傳輸損失特性 的關係圖。 主要元件對照表 IN 輸入端子 經濟部智慧財產局員工消費合作社印製 〇 U 丁 輸 出 丄山 m 子 B 分 支 端 子 S C 外 罩 L 抗 流 線 圈 T T 1 及 T T 2 導引變壓器 D C 分 支 電 路 C 1 及 C 2 電 容 F C 心 W 1 一 次 繞 組 W 2 二 次 繞 組 T 1 比 流 器 1 1 —^ 次 繞 組 1 2 二 次 繞 組 T 2 電 壓 轉 換 器 1 4 二 次 繞 組 R 電阻 本紙尺度遠用中國國家標準（CNS)A4規格（210 X 297公釐）小 Γ請先閱讀背面之注意事項再填寫本頁) _% "0- --線· 490938 A7 -- B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（5 ) c 1 ’及C 2 ’ 電容 較佳實例之詳細說明 圖1 ·顯示本發明第1實施例內部結構圖解。在圖1 中’參考標號S C表示電磁密封金屬外罩，藉由輸入端子 IN，輸出端子OUT，分支端子B與外接連接。 爲實現連接動作，從C A T V設備頭端載送訊號的同 軸電纜連接至輸入端子I N，將載送訊號到下游裝置的同 軸電纜連接至輸出端子OUT。 在另一方面，外罩S C內，輸入端子I N及輸出端子 〇U T與（a )插入抗流線圈L的電源導引，及（b )與 導引變壓器TT1及TT 2，及分支電路DC相連的訊號 導引相連。訊號導引利用電容C 1及C 2做d c切斷，且 分支電路DC連接至分支端子B。 導引變壓器T T 1及T T 2利用線圈纏繞，各自包含 同軸電纜，如3 C — 2V電纜，穿過由三個同軸環狀鐵芯 所組成的芯F C，同軸電纜中心導體當作一次繞組W 1 _ ’ 外部導體當作二次繞組W 2 (圖中未顯示同軸電纜的包覆 體）。透過此方式，既然芯F C以線圈纏繞，電流流過一 次繞組W 1及二次繞組W 2會產生磁通量能防止電流外漏 。再者，既然使用同軸電纜，其特性阻抗與其它元件相同 ，因此可使訊號傳輸損失最小化。 導引變壓器TT1及TT2分別設在輸入端子I N及 輸出端子〇 U T及分支端子B附近’從輸入側或輸出側觀 (·請先閱讀背面之注意事項再填寫本頁) % 訂· -線· 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-8 - 490938 A7 ------- B7 五、發明說明（6 ) 看皆呈互相對稱，且與分支電路D C對稱連接。亦即，舉 例’導引變壓器T T 1 一次繞組W 1的一端（圖左端）經 由電容c 1與輸入端子I N相連，且另一端（圖右端）與 S C連接接地。接著，二次繞組w 2的一端（圖左端）接 地’且另一端連接至分支電路D C的輸出端子OUT。從 一次繞組W 1與二次繞組W 2的連接方式可知，導引變壓 器T T 1由轉換比爲1的d c絕緣反相變壓器組成。 同樣地，導引變壓器T T 2 —次繞組W 1的一端（圖 右端）經由電容C 2與輸出端子〇U 丁相連，且另一端（ 圖左端）與S C連接接地。接著，二次繞組W 2的一端（ 圖右端）接地，且另一端連接至分支電路D C的輸出端子 。如同導引變壓器TT1 ，導引變壓器TT2由反相變壓 器組成。 具備導引變壓器TT 1及TT 2的結構，高頻不平衡 電流施加到導引變壓器T T 1及T T 2，且經模式轉換成 平衡電流。接著，反相且相同位能的電壓產生在導引變壓 器TT1及TT2的端子處。 經濟部智慧財產局員工消費合作社印製 如圖9，分支電路D C具有相同的結構，高頻訊號經 由電容C 2通過分支電路D C比流器T 1的一次繞組1 1 ，流向輸出端子〇U T。此時，局部訊號通過比流器T 1 二次繞組1 2，電壓轉換器T 2二次繞組1 4，及電壓轉 換器T 2電阻R到達分支端子B。 當分支電路的阻抗與輸入端子I N及輸出端子〇U T 的阻抗不同時，可適當地改變導引變壓器T T 1及丁 T 2 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-9 · 490938 A7 B7 五、發明說明（7 ) 的轉換比做調整。 在具有圖1結構的第1實施例中，當高頻訊號從輸入 端子I N供入，由抗流線圈L中斷，但通過電容C 1到達 導引變壓器TT1，並供應至分支電路DC °在分支電路 D C中，比流器T 1及T 2的功能是當作方向親合器’訊 號的一部份供應至分支端子B，且另一部份到達導引變壓 器TT 2，經由電容C 2，從輸出端子OUT輸出到其他 裝置。另一方面，當訊號從外側輸入分支端子B ’訊號經 由分支電路D C及導引變壓器TT 1傳送到輸入端子I N ，並送抵頭端。再者，電源從輸入端子I N ’經由抗流線 圈L抵達輸出端子〇U T。 當浪湧電流從輸入端子I N滲入訊號分支，開始部通 過電容C1及導引變壓器TT1的一次繞組W1抵達外罩 S C。將浪湧電流經由導引變壓器T T 1引導至外罩S C 接地，引導通過電容C 1之浪湧電流開始部滲入可有效防 止分支電路內變壓器芯未磁化。 經濟部智慧財產局員工消費合作社印製 另一方面，導引變壓器T T 1鐵芯F C被磁化，但既 然鐵芯是利用低效導磁性材料製成，如稍後所述，磁化不 會達到飽和。跟在浪湧電流開始部後面的部分電流由電容 C 1阻斷。來自輸出端子0 U T的浪湧亦同樣停止。 使用圖1實施例時，繼續調查浪湧前後訊號失真變化 的情形可獲得以下結果。 (1 ) •在浪湧作用前 本紙張尺度適用中國國家標準（CNS)A4規格（21G X 297公爱)Γ~ϊ〇 : ------- 490938 A7 ------ B7 五、發明說明（8 ) ----------------- C請先閱讀背面之注意事項再填寫本頁) 將 313 · 25MHz 及 337 · 25MHz 兩訊號 同時供入輸入端子I N，且利用光譜分析儀來量測2 4 M H z訊號的訊號水準，兩訊號所產生的差異顯示於輸出 端子〇U Τ。根據測量的結果，當兩訊號的輸入水準在 1 1 0 dB///V，差値訊號的水準爲—1 0 dB///V 。此値爲1 2 0 d B低於輸入値，因此不會產生失真問題 (2 ) •在浪湧作用後 i線- 經濟部智慧財產局員工消費合作社印製 在同軸電纜中心導體及外部導體之間供給0 · 1秒 4 0 0 m A電流，及具有1 〇 〇 V浪湧的d c電壓。隨後 在次將313·25MHz及337.25MHz兩訊號 同時供入輸入端子I N，且利用光譜分析儀來量測2 4 Μ Η z訊號的訊號水準，兩訊號所產生的差異顯示於輸出 端子0 U Τ。根據測量的結果，當兩訊號的輸入水準在 1 1 〇 dB///V，差値訊號的水準爲一 1 〇dB///V 。此値爲1 2 0 d B低於輸入値，與早先供應1 〇 〇 V d c電壓具有完全相同的水準。因此，可確認在圖1第1 實施例中，相互調節特性不會失真。 圖2顯示第2實施例，其中將圖1實施例中之導引變 壓器Τ T 2省略。與圖1實施例連接規劃不同的地方在於 ，分·支電路D C的輸出端子未通過電壓轉換器T 2直接經 由電容C 2連接至輸出端子。 電路操作方式與圖1實施例相同，相對於插入導引變 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-11 - 490938 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明說明（9 ) 壓器的量，輸入端子I N及輸出端子〇 U T之間的穿越損 失量可獲得改善。 圖3顯示本發明第3實施例。在第三實施例中’只輸 入高頻訊號，且省略圖1實施例中的抗流線圈L及電容 C 1 及 C 2。 因此，導引變壓器τ T 1 一次繞組W 1的一端（圖左 端）直接與輸入端子〗N相連，且導引變壓器TT 2二次 繞組W 2的另一端（圖右端）直接連接至輸出端子〇 U T 〇 對於此電路結構的結果，高頻訊號遭受與圖1實施例 相同的操作，但沒有任何電源供應通過。 圖4 .顯示本發明第4實施例。第4實施例與圖1實 施例不同的地方在於導引變壓器T T 1及T T 2 —次繞組 W 1及二次繞組W 2利用同軸電纜纏繞環狀鐵芯F C數圏 而成。本實施例的操作方式與圖1實施例相同。 圖5 ·顯示本發明第5實施例。第5實施例與圖1實 施例不同的地方在於導引變壓器T T 1及T T 2的一次繞 組W 1及二次繞組W 2利用同軸電纜纏繞桿狀鐵芯F C而 成。在此實施例中，在形成二次繞組W 2的同軸電纜外部 導體上設置轉儲電阻R 1，R 2，…R η以防止自我共振 〇 •圖6 ·顯示本發明第6實施例。第6實施例與圖1實 施例不同之處有以下幾點（a )導引變壓器Τ Τ 1及 T T 2 —次繞組W 1的接地端沒有直接接觸外罩s c ,取 (·請先閱讀背面之注意事項再填寫本頁) ¾ ·. 線· 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-12 - 490938 經濟部智慧財產局員工消費合作社印製 ______B7五、發明說明（1〇 ) 而代之的是經由電.容C 1 ’及C 2 圈L;及（b)導引變壓器TT1 F C設有狹縫。使用設有狹縫的環 F C磁化飽和。 圖7顯示本發明第7實施例。 例不同之處有以下幾點（a )導引 的一次繞組W 1及二次繞組W 2沒 以兩條平行的電線取代；且（b ) 丁 T 2內一次繞組W 1的接地端沒 取而代之的是經由電容C 1 ’及C 線圈L。因此，線圈規劃的方式與 同。 在此結構中，縱使使用無法纏 芯，亦可提供主及二次繞組形成導 圖8A，8B ’及8C顯不本 範例。圖8 A顯示設有狹縫的環狀 徑方向（徑向）分割成四部分的環 再軸相分割成二部分的桿狀鐵芯。 以分割，相較於鐵芯未分割的情況 者，鐵新形狀不限於上述方式，可 爲了降低鐵芯導磁率，藉以防 並以·寬頻帶增進傳輸特性’鐵芯可 成的高聚合混合物加以製造。例如 //的粉末狀Μ η Ζ η粒子’以1比 ’接地，並省略抗流線 及ΤΤ2內的環狀鐵芯 狀鐵芯，可防止鐵芯 第7實施例與圖1實施 變壓器ΤΤ1及ΤΤ2 有包含同軸電纜，而是 導引變壓器Τ Τ 1及 有直接接觸外罩S C， 2 ’接地，並省略抗流 圖6所示第6實施例相 繞同軸電 引變壓器 發明所使 鐵芯，圖 狀鐵芯， 當鐵芯透 可降低有 使用多種 止浪湧所 利用分散 ，使用平 1 2重量 纜的小直徑鐵 用鐵芯 8 Β顯 及圖8 過上述 效導磁 不同的 引起的 亞鐵鹽 均直徑 比分散 的三種 示沿直 C顯示 方式加 率。再 形狀。 磁飽和 粒子組 10 0 在環氧 請 先 閱 背 之 注 意 事 項 再3 09 49 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 ____B7______ V. Description of the Invention (1) Field of the Invention The present invention relates to a signal brancher for cable television. In detail, it is used to overcome the wave in the signal brancher. Signal distortion caused by inrush current. BACKGROUND OF THE INVENTION Cable television (CATV) and TV equipment use coaxial cables to provide multiple channels, such as 5 to 100 MHz, from a so-called head-end using a network. Broadband high-frequency signals are provided to home users, providing broadband branches. The distributor distributes signals to home users. In this case, a wideband amplifier is provided to compensate for any signal level drop. The power must be supplied to the amplifier, and it is necessary to avoid the need to provide a power cable separate from the coaxial cable for signal transmission. The power is transmitted through the branch splitter for the coaxial cable to enter the power multiplex. In recent years, the utilization rate of CATV network with this structure has grown rapidly, and it can not only provide transmission of TV signals, but also provide services such as Internet data transmission. For example, the data signal operates in the 5 to 55 MHz band, and the TV signal operates in the 70 to 100 MHz band. Here, the data signal includes the signal sent from the head end or from the home client (reverse signal). When the reverse signal is transmitted, the data enters the RF modem from the computer and reaches the head end along the coaxial cable in the form of high-frequency signals. Through the η router, the reverse signal passes through all the branch splitters between the headend and the home client. Fig. 9 shows an example of a branch divider. In this circuit, power is supplied from an input terminal IN with a high-frequency signal. The power supply is terminated by a capacitor. Please read the precautions on the reverse side before filling out this page.) Huan · Line · This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)-4-A7 --- ----- B7___ V. Description of the invention (2) ^ mc 1 and c 2 and flow along the anti-current coil l to the output terminal 〇υ τ 〇3 On the one hand, the high-frequency signal is blocked by the anti-current coil L, The primary winding 11 of the current divider τ 1 in the branch circuit DC passes through the capacitor C 1 and is output to the output terminal OUT via the capacitor C 2. In this case, in the branch circuit DC, the signal passes through the secondary winding 12 of the current transformer τ 1, the secondary winding 1 4 of the current transformer l 2, and the local signal is from one of the current transformer T 2; The under winding 13 is output to the branch terminal B. The other terminals of the primary winding 1 3 are grounded via a resistor R. The signal of the branch terminal B is evenly distributed to the user terminals P1 ′ p 2,... P η through the distributor, but a branch operation must be performed on the main line. FIG. 10 shows the transmission characteristics of the branch splitter in FIG. 9. That is, in the range of 5 to 1 0 Ο ΟΜΜΗ between the input terminal IN and the output terminal OUT, there is a crossing loss of less than 2. 0 d B, and there is about 2 0 d between the input terminal IN and the branch terminal B. The coupling loss of B is about 30 d B or more decoupling loss between the output terminal OUT and the branch terminal B. Here, the signal branch divider includes a transformer. When the inrush current is applied to the magnetic core combined with the transformer, the signal will be distorted. That is, in the circuit of FIG. 9, when the inrush current penetrates from the input terminal 1 N, it will flow through (a) the capacitor C 1, the transformer T 1 primary winding 1 1 ′ and the voltage transformer T 2 secondary winding 1 4, or Flowing through (b) input terminal IN, the coil L, the capacitor C 1 ′ and the secondary winding 14 of the transformer T 2 reach the ground. In this way, after the transformer T 2 iron core is magnetized, 'residual magnetization effect C, please read the precautions on the back before filling out this page). ¾ ·. The paper printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs applies the Chinese national standard (CNS ) A4 specification (210 X 297 public love 1 ~ 490938 A7 ------- B7_ V. Description of the invention (3) will cause the high-frequency operation area of the transformer to become non-linear. Description of the invention _ The main purpose of the present invention is directed to the above The problem is to provide a CA TV signal brancher, which can prevent signal distortion caused by the internal magnetic core surge current. In order to achieve the above purpose, the CATV signal brancher of the present invention includes a cover, which is provided with input terminals, output terminals, and branch terminals; Transformers and branch circuit components are provided in the housing and connected to the output terminals and output terminals. The CATV signal brancher transmits signals from the input terminals to the output terminals and branch terminals, and from the branch terminals to the input terminals. Cover electromagnetic seal Sealed and provided with openings to accommodate input terminals, output terminals, and branch terminals. These terminals are contained in a housing Furthermore, the pilot transformer is provided with a core having an inefficient magnetic permeability, and includes a primary winding connected between the input terminal and the cover, and a secondary winding connected between the cover and the branch circuit element. The primary winding and the secondary winding have Preset transformer ratio. Simple illustration of the diagram (Please read the precautions on the back before filling out this page) d-line • Printed diagrams by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Chapter ΓΠ7 Month Month Month Month Month By PM > Fafafafafafafafafa textbooks textbooks textbooks show showing one by one not showing the obvious angle of the angle chart diagram AHM structure knot 7J β. Example of the construction of the actual solution diagram in the stand-up case. rnu rnu The construction of the actual solution diagram in the structure part of the actual solution diagram. The examples in the sound box are practical and practical. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -6-490938 A7 ---- B7 V. Description of the invention (4) Figure 8 A ' 8_B 'and 8C show that A diagram of an example of using a magnetic core; Fig. 9 · A diagram showing a conventional CATV signal splitter; Fig. 10 · A diagram showing the relationship between the frequency and transmission loss characteristics of the signal splitter in Fig. 9. Comparison table of main components IN Input terminal Ministry of Economy Wisdom Printed by the employee's consumer cooperative of the property bureau 〇U Ding output Sheshan m Sub-B branch terminal SC cover L current coil TT 1 and TT 2 pilot transformer DC branch circuit C 1 and C 2 capacitor FC core W 1 primary winding W 2 2 The secondary winding T 1 is smaller than the current transformer 1 1 — ^ secondary winding 1 2 secondary winding T 2 voltage converter 1 4 secondary winding R resistance The paper size is far smaller than China National Standard (CNS) A4 (210 X 297 mm) Γ Please read the precautions on the back before filling out this page) _% " 0--line · 490938 A7-B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of invention (5) c 1 'and C Detailed description of the preferred example of 2 'capacitor FIG. 1 shows a schematic diagram of the internal structure of the first embodiment of the present invention. In FIG. 1, the reference numeral S C denotes an electromagnetic-sealed metal cover, and is connected to an external terminal through an input terminal IN, an output terminal OUT, and a branch terminal B. In order to realize the connection action, the coaxial cable carrying a signal from the head end of the CATV device is connected to the input terminal IN, and the coaxial cable carrying a signal to a downstream device is connected to the output terminal OUT. On the other hand, in the housing SC, the input terminal IN and the output terminal OUT are connected to (a) a power supply guide inserted into the current-repellent coil L, and (b) connected to the guide transformers TT1 and TT 2 and the branch circuit DC Signal guidance is connected. The signal guide uses the capacitors C 1 and C 2 to cut off d c, and the branch circuit DC is connected to the branch terminal B. The pilot transformers TT 1 and TT 2 are wound with a coil, each of which includes a coaxial cable, such as a 3 C-2V cable, which passes through a core FC composed of three coaxial ring-shaped iron cores, and the central conductor of the coaxial cable is used as a primary winding W 1 _ 'The outer conductor is used as the secondary winding W 2 (the cover of the coaxial cable is not shown in the figure). In this way, since the core F C is wound in a coil, a current flowing through the primary winding W 1 and the secondary winding W 2 will generate a magnetic flux to prevent current leakage. Furthermore, since coaxial cables are used, their characteristic impedance is the same as other components, so signal transmission losses can be minimized. The pilot transformers TT1 and TT2 are respectively located near the input terminal IN and the output terminal OUT and the branch terminal B 'from the input side or the output side (· Please read the precautions on the back before filling this page)% Order · -Wire · This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) -8-490938 A7 ------- B7 V. Description of the invention (6) All are symmetrical to each other and are branched to DC Symmetrical connection. That is, for example, one end of the primary winding W 1 of the pilot transformer T T 1 (the left end of the figure) is connected to the input terminal I N through a capacitor c 1, and the other end (the right end of the figure) is connected to S C and grounded. Next, one end (the left end in the figure) of the secondary winding w 2 is grounded and the other end is connected to the output terminal OUT of the branch circuit DC. From the connection of the primary winding W 1 and the secondary winding W 2, it can be known that the pilot transformer T T 1 is composed of a d c insulated inverter transformer with a conversion ratio of 1. Similarly, one end of the pilot transformer T T 2 —the secondary winding W 1 (the right end in the figure) is connected to the output terminal 0 D through the capacitor C 2, and the other end (the left end in the figure) is connected to S C and grounded. Next, one end (the right end in the figure) of the secondary winding W 2 is grounded, and the other end is connected to the output terminal of the branch circuit DC. Like the pilot transformer TT1, the pilot transformer TT2 consists of an inverting transformer. With the structure of the pilot transformers TT 1 and TT 2, high-frequency unbalanced current is applied to the pilot transformers T T 1 and T T 2 and is converted into a balanced current through a mode. Then, an inverse and the same potential energy voltage is generated at the terminals of the pilot transformers TT1 and TT2. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs As shown in Fig. 9, the branch circuit DC has the same structure, and the high-frequency signal passes through the capacitor C2 through the primary winding 11 of the current transformer T1 to the output terminal UT. At this time, the local signal reaches the branch terminal B through the secondary winding 12 of the current transformer T 1, the secondary winding 14 of the voltage converter T 2, and the resistance R of the voltage converter T 2. When the impedance of the branch circuit is different from the impedance of the input terminal IN and the output terminal OUT, the lead transformers TT 1 and D 2 can be appropriately changed. This paper size applies to the Chinese National Standard (CNS) A4 (210 X 297 mm). ) -9 · 490938 A7 B7 5. The conversion ratio of invention description (7) is adjusted. In the first embodiment having the structure of FIG. 1, when a high-frequency signal is supplied from the input terminal IN, it is interrupted by the current-resistant coil L, but reaches the pilot transformer TT1 through the capacitor C 1 and is supplied to the branch circuit DC ° at the branch. In the circuit DC, the current transformers T 1 and T 2 function as a part of the directional coupler signal and supply it to the branch terminal B, and the other part reaches the pilot transformer TT 2 through the capacitor C 2, Output from output terminal OUT to other devices. On the other hand, when a signal is input from the outside to the branch terminal B ', the signal is transmitted to the input terminal I N through the branch circuit DC and the pilot transformer TT 1 and reaches the head end. In addition, the power is supplied from the input terminal I N ′ to the output terminal 〇 T via the choke coil L. When the inrush current penetrates into the signal branch from the input terminal IN, the starting portion reaches the cover S C through the capacitor C1 and the primary winding W1 of the pilot transformer TT1. The inrush current is guided to the ground of the cover S C through the pilot transformer T T 1, and the infiltration of the surge current through the capacitor C 1 is introduced to prevent the transformer core in the branch circuit from being magnetized. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs On the other hand, the lead transformer TT 1 iron core FC is magnetized, but since the iron core is made of inefficient magnetically conductive material, as described later, the magnetization will not reach saturation . The part of the current following the start of the inrush current is blocked by the capacitor C 1. The surge from output terminal 0 U T also stops. When using the embodiment of Fig. 1, the following results can be obtained by continuing to investigate the signal distortion changes before and after the surge. (1) • Before the surge, the paper size applies the Chinese National Standard (CNS) A4 (21G X 297 public love) Γ ~ ϊ〇: ------- 490938 A7 ------ B7 5 、 Explanation of invention (8) ----------------- C Please read the notes on the back before filling this page.) 313 · 25MHz and 337 · 25MHz signals are simultaneously input Terminal IN, and use a spectrum analyzer to measure the signal level of the 2 4 MHz signal. The difference between the two signals is displayed at the output terminal 〇 Τ. According to the measurement results, when the input levels of the two signals are at 110 dB /// V, the level of the differential signal is -10 dB /// V. This 値 is 1 2 0 d B is lower than the input 因此, so there will be no distortion problems (2) • i-line after the surge-printed on the coaxial conductor of the coaxial cable and the outer conductor It supplies a current of 400 mA between 0 and 1 second, and a dc voltage with a surge of 1000V. Subsequently, two signals of 313 · 25MHz and 337.25MHz were simultaneously supplied to the input terminal IN, and a spectrum analyzer was used to measure the signal level of the 2 4 Μ Η z signal. The difference between the two signals was displayed at the output terminal 0 U Τ . According to the measurement results, when the input levels of the two signals are at 110 dB /// V, the level of the differential signal is -110 dB /// V. This 値 is lower than the input 1 1 2 0 d B, which is exactly the same level as the voltage of 1000 V d c previously supplied. Therefore, it can be confirmed that in the first embodiment of FIG. 1, the mutual adjustment characteristics are not distorted. Fig. 2 shows a second embodiment in which the pilot transformer T T 2 in the embodiment of Fig. 1 is omitted. The difference from the connection plan of the embodiment in FIG. 1 lies in that the output terminal of the branch and branch circuit D C is directly connected to the output terminal through the capacitor C 2 without passing through the voltage converter T 2. The circuit operation method is the same as that of the embodiment in FIG. 1, and the paper size of the insert guide variant applies Chinese National Standard (CNS) A4 (210 X 297 mm) -11-490938 A7 B7 System V. Description of the Invention (9) The amount of voltage reducer and the amount of passing loss between the input terminal IN and the output terminal OUT can be improved. Fig. 3 shows a third embodiment of the present invention. In the third embodiment, 'only high-frequency signals are input, and the choke coil L and the capacitors C 1 and C 2 in the embodiment of Fig. 1 are omitted. Therefore, one end (left end of the figure) of the primary winding W 1 of the pilot transformer τ T 1 is directly connected to the input terminal N, and the other end (right end of the figure) of the secondary winding W 2 of the pilot transformer TT 2 is directly connected to the output terminal. UT 〇 For the result of this circuit structure, the high-frequency signal is subjected to the same operation as in the embodiment of FIG. 1, but no power supply passes. Fig. 4 shows a fourth embodiment of the present invention. The fourth embodiment is different from the embodiment of Fig. 1 in that the pilot transformers T T 1 and T T 2-the secondary winding W 1 and the secondary winding W 2 are formed by winding a ring-shaped core F C with a coaxial cable. The operation mode of this embodiment is the same as the embodiment of FIG. 1. Fig. 5 shows a fifth embodiment of the present invention. The fifth embodiment is different from the embodiment of FIG. 1 in that the primary windings W 1 and the secondary windings W 2 of the pilot transformers T T 1 and T T 2 are formed by winding a rod-shaped core F C with a coaxial cable. In this embodiment, a dump resistor R1, R2, ... Rn is provided on the outer conductor of the coaxial cable forming the secondary winding W2 to prevent self-resonance. Fig. 6 shows a sixth embodiment of the present invention. The sixth embodiment differs from the embodiment in FIG. 1 in the following points (a) the guide transformers TT 1 and TT 2-the ground terminal of the secondary winding W 1 does not directly contact the outer cover sc, take (· please read the back Note: Please fill in this page again) ¾ ·. Thread · This paper size is applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) -12-490938 Printed by the Consumer Cooperatives of Intellectual Property Bureau of the Ministry of Economic Affairs Explanation (10) Instead, the capacitors C 1 ′ and C 2 are used to turn L; and (b) the pilot transformer TT1 FC is provided with slits. Slotted ring F C is used for magnetization saturation. Fig. 7 shows a seventh embodiment of the present invention. The difference between the examples is as follows: (a) the primary winding W 1 and the secondary winding W 2 that are guided are not replaced by two parallel wires; and (b) the ground terminal of the primary winding W 1 in T 2 is not replaced. It is through the capacitor C 1 ′ and the C coil L. The coil planning is therefore the same. In this structure, even if the core cannot be wound, the main and secondary winding formation guides can be provided as shown in Figs. 8A, 8B 'and 8C. Fig. 8A shows a ring-shaped core provided with slits, which is divided into four parts in the radial direction (radial direction), and the shaft core is divided into two parts. Compared with the case where the core is not divided, the new shape of the iron is not limited to the above method. In order to reduce the magnetic permeability of the core, it can prevent and improve the transmission characteristics with a wide frequency band. Manufacturing. For example, // the powdery M η Zn η particles are grounded at a ratio of 1 and omit the anti-streamline and the ring-shaped core-shaped core in the TT2, which can prevent the transformer TT1 and the core from being implemented in the seventh embodiment and FIG. 1. TT2 includes a coaxial cable, but a guide transformer TT1 and a direct contact housing SC, 2 'grounded, and omission of current resistance. The core made by the invention of the phase-wound coaxial electrical transformer according to the sixth embodiment shown in FIG. The shape of the iron core, when the core is penetrated, it can reduce the use of a variety of anti-surge, the use of dispersion, the use of flat 1 2 small diameter iron core for small diameter 8B is shown in Figure 8. The ratios of the three kinds of salt average diameter ratio dispersion are shown along the straight C display. Shape again. Magnetically Saturated Particles 10 0 In Epoxy
頁 訂 線 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-13 - 490938 A7 B7 m 五、發明說明（11 ) 樹脂內，並鑄模成外徑2 0 m m的環狀體。 當裝置鐵芯採用如圖8 防止磁飽和，可有效降低導 如上所述，根據本發明 入端子，輸出端子，及分支 引變壓器，分支電路元件， 因浪湧及類似的現象使導引 既然導引變壓器使用低有效 輕易發生。 因此，可提供在全寬帶 號分支器，其中在輸入端子 傳輸的訊號不會因分支電路 失真。 孔徑1 0 m m，高4 A至8 C及類似的設計方式來 磁性並增進裝置的導磁性。 ，電磁密封密封外罩僅設有輸 端子與外界連接，內部容納導 及類似的組件。因此，可防止 變壓器鐵芯產生磁化。再者’ 磁導率芯材，磁飽和情況不會 間皆有穩定特性的C A T V訊 ，輸出端子，及分支端子之間 及導引變壓器內鐵芯的磁化而 請 先 閱 讀 背 面 之 注 意 事 項 再 頁 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）-14 -Page aligning This paper size applies to Chinese National Standard (CNS) A4 (210 X 297 mm) -13-490938 A7 B7 m 5. Description of the invention (11) In the resin, and molded into a ring with an outer diameter of 20 mm body. When the device core is used as shown in Figure 8 to prevent magnetic saturation, it can effectively reduce the conductance. As described above, according to the present invention, the input terminals, output terminals, and branch transformers, branch circuit components, etc. Low-efficiency transformers can easily occur. Therefore, a full-bandwidth splitter can be provided, in which the signal transmitted at the input terminal is not distorted by the branch circuit. Aperture of 10 mm, height of 4 A to 8 C and similar designs are used to make the magnetic properties and increase the magnetic permeability of the device. The electromagnetic sealing and sealing cover is only provided with output terminals for connection with the outside, and internally contains conductive and similar components. Therefore, magnetization of the transformer core can be prevented. Furthermore, the magnetic permeability of the core material will not cause CATV signals with stable characteristics between magnetic saturation, output terminals, branch terminals and the magnetization of the core in the transformer. Please read the precautions on the back first. Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) -14-